Construction steel bar bending device

Abstract

The utility model discloses a construction steel bar bending device, and relates to the technical field of steel bar bending. The device comprises a cabinet body, the top of the cabinet body is fixedly connected with a supporting platform, the top of the supporting platform is provided with a circular movable groove, the top of the supporting platform is provided with a bending composite assembly, and the inner side of the circular movable groove is provided with an extrusion assembly. According to the steel bar bending device, the bending composite assembly is arranged, and the two ends of the steel bar can be adaptively fixed, so that the bending effect of steel bar bending can be improved, and meanwhile the applicability of the bending device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar bending, in particular to a construction steel bar bending device. Background Art

[0002] During the actual use of steel bars, the steel bars need to be bent according to requirements to make them present a certain angle. In the process of bending the steel bars, in order to save time and effort, most of them use a steel bar bending machine for bending treatment.

[0003] The steel bar bending machine is disclosed in the authorized publication number "CN210450713U", which records the technical problem that "it makes the steel bar not easy to bounce from the rotating disk during the bending process, so it is not easy to cause harm to the staff operating the equipment".

[0004] During the specific implementation of this patent by the applicant, it is found that this patent has the following technical problems:

[0005] Since the abutting block set in this patent pushes the steel bar, but no corresponding resisting object is set on the other side of the steel bar, only the column and the push rod can clamp the steel bar. When the end of the steel bar close to the abutting block is pushed by the abutting block, the overall angle of the steel bar will change, which will affect the bending effect of the steel bar. Therefore, it is necessary to propose a construction steel bar bending device to provide a new technical solution to solve the technical problems mentioned in the above patent. Summary of the Utility Model

[0006] Based on this, a construction steel bar bending device is provided to solve the following technical problems mentioned in the background art: Since the abutting block set in this patent pushes the steel bar, but no corresponding resisting object is set on the other side of the steel bar, only the column and the push rod can clamp the steel bar. When the end of the steel bar close to the abutting block is pushed by the abutting block, the overall angle of the steel bar will change, which will affect the bending effect of the steel bar.

[0007] The utility model adopts the following technical scheme:

[0008] The construction steel bar bending device specifically includes a cabinet body, a support platform is fixedly connected to the top of the cabinet body, a circular movable groove is opened on the top of the support platform, a bending composite component is installed on the top of the support platform, and an extrusion component is installed inside the circular movable groove;

[0009] The bending composite component includes a pushing module, a resisting baffle and a bending module. A pushing module is fixedly connected to one end of the top of the support platform, a resisting baffle is fixedly connected to the top of the support platform, and the position of the resisting baffle corresponds to that of the pushing module. A bending module is installed inside the circular movable groove.

[0010] Further, the pushing module includes a fixed concave plate, a first motor, a first threaded rod, a pushing block, a shielding plate, a second motor, a second threaded rod, and a first fixing rod. One side of the top of the support platform away from one end of the circular movable groove is fixedly connected with the fixed concave plate. One side of the fixed concave plate away from the center of the support platform is fixedly connected with the first motor. The output end of the first motor is fixedly connected with the first threaded rod, and the first threaded rod penetrates through the side wall of the fixed concave plate and is rotatably connected with the fixed concave plate. The inside of the fixed concave plate is in clearance fit with the pushing block, and the pushing block is threadedly connected with the first threaded rod. Both ends of the side of the pushing block away from the first threaded rod are provided with sliding grooves. A shielding plate is arranged on the side of the pushing block away from the first threaded rod, and both ends of the side of the shielding plate close to the pushing block are in clearance fit with the sliding grooves. A second motor is fixedly connected inside one of the sliding grooves. The output end of the second motor is fixedly connected with the second threaded rod, and the end of the second threaded rod away from the second motor is rotatably connected with the inside of the sliding groove, and the second threaded rod is threadedly connected with the shielding plate. A first fixing rod is fixedly connected inside the other sliding groove, and the first fixing rod is in clearance fit with the shielding plate.

[0011] Further, the bending module includes a rotating disk, a driving module, and a second fixing rod. A rotating disk is arranged inside the circular movable groove. The driving module is fixedly connected to the bottom inside the circular movable groove. The driving module is fixedly connected to the bottom of the rotating disk and is used to drive the rotating disk to rotate. A second fixing rod is fixedly connected to the center position of the top of the rotating disk, and the position of the second fixing rod corresponds to that of the baffle plate.

[0012] Further, the bending module further includes a moving rod, a connecting disk, a fixing piece, a third motor, and a third threaded rod. A moving groove is formed in the top of the rotating disk. The moving rod is arranged inside the moving groove. A connecting disk is fixedly connected to the outer side of the bottom of the moving rod, and the moving rod is slidably connected to the inside of the moving groove through the connecting disk. A fixing piece is fixedly connected to the outer peripheral side of the rotating disk, and the position of the fixing piece corresponds to that of the moving groove, and the fixing piece is in clearance fit with the inside of the circular movable groove. A third motor is fixedly connected to the top of the fixing piece. The output end of the third motor is fixedly connected with the third threaded rod. The third threaded rod penetrates through the side wall of the rotating disk and extends into the inside of the moving groove, and the third threaded rod is rotatably connected with the side wall of the rotating disk. The outer side of the third threaded rod located inside the moving groove is threadedly connected with the inner side of the bottom of the moving rod.

[0013] Further, the extrusion assembly includes an arc-shaped extrusion plate, a connecting plate, and an extrusion mating plate. Arc-shaped extrusion plates are provided at both ends inside the circular movable groove. The two arc-shaped extrusion plates are arranged to wrap the rotating disk. A square movable groove is formed inside the bottom of the support platform. The square movable groove is located at the bottom of the circular movable groove. A guiding groove is formed between the square movable groove and the circular movable groove. The bottom of the arc-shaped extrusion plate is fixedly connected to the connecting plate. The connecting plate passes through the guiding groove and extends to the inside of the square movable groove. The connecting plate and the guiding groove are arranged with a clearance fit. The bottom of the connecting plate located inside the square movable groove is fixedly connected to the extrusion mating plate, and the bottom of the extrusion mating plate is arc-shaped.

[0014] Further, the extrusion assembly further includes a fourth threaded rod, a fourth motor, and a moving extrusion plate. The fourth threaded rod is rotatably connected inside the square movable groove. One end of the support platform is fixedly connected to the fourth motor, and the output end of the fourth motor extends to the inside of the square movable groove and is fixedly connected to the fourth threaded rod. Moving extrusion plates are threadedly connected to the outer sides of both ends of the fourth threaded rod. The moving extrusion plates are both corresponding to the positions of the connecting plates. The tops of the moving extrusion plates are both arc-shaped and are in extrusion fit with the bottom of the connecting plate.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] A construction steel bar bending device provided by the present utility model can adaptively fix both ends of the steel bar, thereby improving the bending effect of the steel bar and simultaneously improving the applicability of the bending device.

[0017] A construction steel bar bending device provided by the present utility model can push the bent steel bar upward and create a gap at the bottom of the steel bar, thereby improving the convenience of removing the bent steel bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the solutions in the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall structure of a construction steel bar bending device provided by the present utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the pushing module of a construction steel bar bending device provided by the present utility model;

[0021] Figure 3 Schematic diagram of the structure of the pushing block of a construction steel bar bending device provided by the present utility model;

[0022] Figure 4 Schematic diagram of the structure of the rotating disk of a construction steel bar bending device provided by the present utility model;

[0023] Figure 5 Schematic diagram of the structure of the moving extrusion plate of a construction steel bar bending device provided by the present utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 1, cabinet; 2, support platform; 3, bending composite component; 4, extrusion component; 5, pushing module; 6, bending module; 7, fixed concave plate; 8, first motor; 9, first threaded rod; 10, pushing block; 11, shielding plate; 12, second motor; 13, second threaded rod; 14, first fixed rod; 15, rotating disk; 16, driving module; 17, second fixed rod; 18, moving rod; 19, connecting disk; 20, fixing piece; 21, third motor; 22, third threaded rod; 23, arc-shaped extrusion plate; 24, connecting plate; 25, extrusion mating plate; 26, fourth threaded rod; 27, fourth motor; 28, moving extrusion plate; 29, resisting baffle. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] As described in the background art, since the pushing block set in the patent pushes the steel bar, but there is no corresponding resisting object on the other side of the steel bar. Therefore, only the column and the push rod can clamp the steel bar. When the end of the steel bar close to the pushing block is pushed by the pushing block, the overall angle of the steel bar will change, thus affecting the bending effect of the steel bar.

[0028] To solve this technical problem, the present utility model provides a construction steel bar bending device, which can adaptively fix both ends of the steel bar, thereby improving the bending effect of the steel bar bending and also improving the applicability of the bending device.

[0029] Specifically, please refer to Figure 1 - Figure 2, A construction steel bar bending device specifically includes a cabinet body 1. A support platform 2 is fixedly connected to the top of the cabinet body 1. A circular movable groove is opened on the top of the support platform 2. A bending composite component 3 is installed on the top of the support platform 2, and an extrusion component 4 is installed inside the circular movable groove;

[0030] The bending composite component 3 includes a pushing module 5, a baffle 29, and a bending module 6. A pushing module 5 is fixedly connected to one end of the top of the support platform 2. A baffle 29 is fixedly connected to the top of the support platform 2, and the position of the baffle 29 corresponds to that of the pushing module 5. A bending module 6 is installed inside the circular movable groove.

[0031] In order to enable the personnel in the technical field to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings.

[0032] Embodiment 1:

[0033] Please refer to Figure 1 - Figure 2 , A construction steel bar bending device, which includes a cabinet body 1. A support platform 2 is fixedly connected to the top of the cabinet body 1. A circular movable groove is opened on the top of the support platform 2. A bending composite component 3 is installed on the top of the support platform 2, and an extrusion component 4 is installed inside the circular movable groove;

[0034] The bending composite component 3 includes a pushing module 5, a baffle 29, and a bending module 6. A pushing module 5 is fixedly connected to one end of the top of the support platform 2. A baffle 29 is fixedly connected to the top of the support platform 2, and the position of the baffle 29 corresponds to that of the pushing module 5. A bending module 6 is installed inside the circular movable groove.

[0035] During use, place the steel bar between the baffle 29 and the pushing module 5 on the top of the support platform 2. As the steel bar is continuously pushed, the end of the steel bar can be inserted into the inside of the bending module 6. Subsequently, through the setting of the bending module 6, drive the steel bar to rotate, thereby completing the bending operation of the steel bar;

[0036] Through the setting of the pushing module 5, it can play a shielding effect on the top of the steel bar. At the same time, in conjunction with the setting of the bending module 6, it can clamp and bend steel bars of different thicknesses, thereby improving the applicability of the bending device;

[0037] Through the setting of the extrusion component 4, the bent steel bar can be extruded, thereby improving the convenience of taking out the bent steel bar.

[0038] Embodiment 2:

[0039] Embodiment 2 is used to further disclose the specific structure of the bending composite component 3 on the premise of the above embodiment. By cooperating the bending composite component 3 with the structure in the above embodiment, it is possible to adaptively fix both ends of the steel bar, thereby improving the bending effect of the steel bar bending and at the same time improving the applicability of the bending device.

[0040] Further optimize a construction steel bar bending device provided in Embodiment 1. Specifically, as Figure 3 - Figure 4 shown, the pushing module 5 includes a fixed concave plate 7, a first motor 8, a first threaded rod 9, a pushing block 10, a shielding plate 11, a second motor 12, a second threaded rod 13 and a first fixing rod 14. One side of the top of the support platform 2 away from one end of the circular movable groove is fixedly connected with a fixed concave plate 7. One side of the fixed concave plate 7 away from the center of the support platform 2 is fixedly connected with a first motor 8. The output end of the first motor 8 is fixedly connected with a first threaded rod 9, and the first threaded rod 9 penetrates through the side wall of the fixed concave plate 7 and is rotatably connected with the fixed concave plate 7. The inside of the fixed concave plate 7 is in clearance fit with a pushing block 10, and the pushing block 10 is threadedly connected with the first threaded rod 9. Sliding grooves are formed at both ends of the side of the pushing block 10 away from the first threaded rod 9. A shielding plate 11 is arranged on the side of the pushing block 10 away from the first threaded rod 9, and both ends of the side of the shielding plate 11 close to the pushing block 10 are in clearance fit with the sliding grooves. A second motor 12 is fixedly connected inside one of the sliding grooves. The output end of the second motor 12 is fixedly connected with a second threaded rod 13, and the end of the second threaded rod 13 away from the second motor 12 is rotatably connected with the inside of the sliding groove, and the second threaded rod 13 is threadedly connected with the shielding plate 11. A first fixing rod 14 is fixedly connected inside the other sliding groove, and the first fixing rod 14 is in clearance fit with the shielding plate 11.

[0041] The bending module 6 includes a rotating disk 15, a driving module 16 and a second fixing rod 17. A rotating disk 15 is arranged inside the circular movable groove. A driving module 16 is fixedly connected to the bottom inside the circular movable groove. The driving module 16 is fixedly connected to the bottom of the rotating disk 15 and is used to drive the rotating disk 15 to rotate. A second fixing rod 17 is fixedly connected to the center position of the top of the rotating disk 15, and the position of the second fixing rod 17 corresponds to that of the baffle 29.

[0042] The bending module 6 further includes a moving rod 18, a connecting disk 19, a fixing piece 20, a third motor 21 and a third threaded rod 22. A moving groove is formed at the top of the rotating disk 15. The moving rod 18 is arranged inside the moving groove. A connecting disk 19 is fixedly connected to the outer side of the bottom of the moving rod 18. The moving rod 18 is slidably connected to the inner side of the moving groove through the connecting disk 19. A fixing piece 20 is fixedly connected to the outer peripheral side of the rotating disk 15. The position of the fixing piece 20 corresponds to that of the moving groove. The fixing piece 20 is in clearance fit with the inner side of the circular moving groove. A third motor 21 is fixedly connected to the top of the fixing piece 20. The output end of the third motor 21 is fixedly connected to a third threaded rod 22. The third threaded rod 22 penetrates through the side wall of the rotating disk 15 and extends to the inside of the moving groove. The third threaded rod 22 is rotatably connected to the side wall of the rotating disk 15. The outer side of the third threaded rod 22 located inside the moving groove is in threaded connection with the inner side of the bottom of the moving rod 18.

[0043] Specifically: The steel bar can be placed between the baffle 29 and the pushing block 10. Subsequently, by starting the first motor 8, the first motor 8 drives the first threaded rod 9 to rotate, and drives the pushing block 10 threadedly connected to the first threaded rod 9 to move inside the fixed concave plate 7 toward the side close to the baffle 29, so that the two sides of the steel bar can be clamped through the cooperation of the pushing block 10 and the baffle 29.

[0044] Subsequently, start the second motor 12, and drive the second threaded rod 13 to rotate inside the sliding groove through the second motor 12, so that the shielding plate 11 threadedly connected to the second threaded rod 13 can move up and down outside the pushing block 10, and play a shielding effect on the top of the steel bar, so that the phenomenon of the steel bar flying off during the bending process can be avoided.

[0045] At the same time, the other end of the steel bar will be located between the second fixing rod 17 and the moving rod 18. By starting the third motor 21, driving the third threaded rod 22 to rotate inside the moving groove, the moving rod 18 can be driven to move inside the moving groove toward the side close to the second fixing rod 17, so that the clamping effect on the steel bar can be achieved. At this time, the position of the second fixing rod 17 corresponds to that of the baffle 29, and the position of the moving rod 18 corresponds to that of the pushing block 10, so that both ends of the steel bar can be clamped and fixed, and further the bending effect of the steel bar can be improved.

[0046] Through the setting of the driving module 16, the rotating disk 15 can be driven to rotate inside the circular moving groove, so that the moving rod 18 can be driven to move around the second fixing rod 17, and the operation of bending the steel bar can be realized.

[0047] It should be noted that since the second fixing rod 17 and the baffle 29 are in a horizontal state, the pushing block 10 and the moving rod 18 are in a horizontal state and are on the same side of the second fixing rod 17 and the baffle 29, the driving module 16 can only drive the rotating disk 15 to rotate in one direction, which means that the moving rod 18 moves away from the end of the pushing block 10 and moves around the second fixing rod 17 as the center.

[0048] Embodiment 3:

[0049] This Embodiment 3 further discloses the specific structure of the extrusion assembly 4 on the premise of the above embodiments. By cooperating the extrusion assembly 4 with the structures in the above embodiments, it can push the bent steel bar upward and generate a gap at the bottom of the steel bar, thereby improving the convenience of removing the bent steel bar.

[0050] Further optimize the construction steel bar bending device provided in Embodiment 1 and Embodiment 2. Specifically, as Figure 5 shown, the extrusion assembly 4 includes an arc-shaped extrusion plate 23, a connecting plate 24 and an extrusion mating plate 25. Arc-shaped extrusion plates 23 are arranged at both ends inside the circular movable groove. The two arc-shaped extrusion plates 23 are arranged to wrap the rotating disk 15. A square movable groove is formed inside the bottom of the support platform 2. The square movable groove is located at the bottom of the circular movable groove. A guiding groove is formed between the square movable groove and the circular movable groove. The bottom of the arc-shaped extrusion plate 23 is fixedly connected with the connecting plate 24. The connecting plate 24 passes through the guiding groove and extends to the inside of the square movable groove. The connecting plate 24 is arranged in clearance fit with the guiding groove. The bottom of the connecting plate 24 located inside the square movable groove is fixedly connected with the extrusion mating plate 25, and the bottom of the extrusion mating plate 25 is arc-shaped.

[0051] The extrusion assembly 4 further includes a fourth threaded rod 26, a fourth motor 27 and a moving extrusion plate 28. The fourth threaded rod 26 is rotatably connected inside the square movable groove. One end of the support platform 2 is fixedly connected with the fourth motor 27, and the output end of the fourth motor 27 extends to the inside of the square movable groove and is fixedly connected with the fourth threaded rod 26. Moving extrusion plates 28 are threadedly connected to the outer sides of both ends of the fourth threaded rod 26. The moving extrusion plates 28 correspond to the positions of the connecting plates 24. The tops of the moving extrusion plates 28 are all arc-shaped and are in extrusion fit with the bottoms of the connecting plates 24.

[0052] Specifically: After the steel bar is bent, by adjusting the positions of the pushing block 10, the baffle 11 and the second fixing rod 17, the fixing effect on the outer side of the steel bar is cancelled;

[0053] At this time, the fourth motor 27 can be started, and the output end of the fourth motor 27 drives the fourth threaded rod 26 to rotate inside the square movable groove. At this time, the fourth threaded rod 26 can drive the two moving extrusion plates 28 to move synchronously to the same side and pass through the bottom of the extrusion matching plate 25. At this time, through the extrusion cooperation between the arc-shaped setting at the top of the moving extrusion plate 28 and the arc-shaped setting at the bottom of the extrusion matching plate 25, when the moving extrusion plate 28 passes through the bottom of the extrusion matching plate 25, the extrusion matching plate 25 can be jacked up. Thus, through the connection setting of the connecting plate 24, the arc-shaped extrusion plate 23 can be driven to move upward synchronously. Thus, the bent steel bar can be jacked up by the movement of the arc-shaped extrusion plate 23, and a gap is generated between the bottom of the steel bar and the top of the support platform 2. Thus, it is convenient for the user to take the bent steel bar, and further, the convenience of the bending device can be improved.

Claims

1. A construction steel bar bending device, comprising a cabinet (1), characterized in that: The top of the cabinet (1) is fixedly connected to a support platform (2), the top of the support platform (2) is provided with a circular movable groove, the top of the support platform (2) is provided with a bending composite component (3), and the inner side of the circular movable groove is provided with an extrusion component (4); The bending composite component (3) comprises a pushing module (5), a stop plate (29) and a bending module (6); one end of the top of the support platform (2) is fixedly connected to the pushing module (5); the top of the support platform (2) is fixedly connected to the stop plate (29), and the position of the stop plate (29) corresponds to that of the pushing module (5); and the bending module (6) is installed on the inner side of the circular movable groove.

2. A construction steel bar bending device according to claim 1, characterized in that: The pushing module (5) comprises a fixed concave plate (7), a first motor (8), a first threaded rod (9), a pushing block (10), a shielding plate (11), a second motor (12), a second threaded rod (13) and a first fixed rod (14); a fixed concave plate (7) is fixedly connected to a side of the top of the support platform (2) away from one end of the circular movable groove; a first motor (8) is fixedly connected to a side of the fixed concave plate (7) away from the center of the support platform (2); a first threaded rod (9) is fixedly connected to an output end of the first motor (8); the first threaded rod (9) passes through a side wall of the fixed concave plate (7); the first threaded rod (9) and the fixed concave plate (7) are rotatably connected; a pushing block (10) is provided on the inner side of the fixed concave plate (7) in clearance fit; and the pushing block (10) and the first threaded rod (9) are threadedly connected. The two ends of the pushing block (10) away from the first threaded rod (9) are provided with sliding grooves, the side of the pushing block (10) away from the first threaded rod (9) is provided with a shielding plate (11), and the two ends of the shielding plate (11) close to the pushing block (10) are both arranged with clearance fit with the sliding groove, one of the sliding grooves is fixedly connected with a second motor (12), the output end of the second motor (12) is fixedly connected with a second threaded rod (13), and the end of the second threaded rod (13) away from the second motor (12) is rotatably connected with the inner side of the sliding groove, and the second threaded rod (13) and the shielding plate (11) are threadedly connected, and the other sliding groove is fixedly connected with a first fixing rod (14), and the first fixing rod (14) and the shielding plate (11) are arranged with clearance fit.

3. A construction steel bar bending device according to claim 2, characterized in that: The bending module (6) comprises a rotating disk (15), a driving module (16) and a second fixed rod (17); the rotating disk (15) is arranged inside the circular movable groove; the driving module (16) is fixedly connected to the bottom of the inner side of the circular movable groove; the driving module (16) is fixedly connected to the bottom of the rotating disk (15), and the driving module (16) is used to drive the rotating disk (15) to rotate; the second fixed rod (17) is fixedly connected to the center position of the top of the rotating disk (15), and the position of the second fixed rod (17) corresponds to the stop plate (29).

4. A construction steel bar bending device according to claim 3, characterized in that: The bending module (6) further comprises a moving rod (18), a connecting disk (19), a fixing plate (20), a third motor (21) and a third threaded rod (22); a moving groove is provided on the top of the rotating disk (15); a moving rod (18) is provided on the inner side of the moving groove; a connecting disk (19) is fixedly connected to the outer side of the bottom of the moving rod (18); and the moving rod (18) is slidably connected to the inner side of the moving groove through the connecting disk (19); a fixing plate (20) is fixedly connected to the outer peripheral side of the rotating disk (15); and the position of the fixing plate (20) is aligned with the moving groove. The fixing plate (20) and the inner side of the circular movable groove are clearance-matched, a third motor (21) is fixedly connected to the top of the fixing plate (20), and a third threaded rod (22) is fixedly connected to the output end of the third motor (21), and the third threaded rod (22) passes through the side wall of the rotating disk (15) and extends to the inner side of the movable groove, and the third threaded rod (22) and the side wall of the rotating disk (15) are rotationally connected, and the third threaded rod (22) is located on the outer side of the inner side of the movable groove and is threadedly connected to the inner side of the bottom of the movable rod (18).

5. A construction steel bar bending device according to claim 4, characterized in that: The extrusion assembly (4) comprises an arc-shaped extrusion plate (23), a connecting plate (24) and an extrusion matching plate (25). The two ends of the inner side of the circular movable groove are each provided with an arc-shaped extrusion plate (23). The two arc-shaped extrusion plates (23) are arranged to wrap the rotating disk (15). A square movable groove is provided on the inner side of the bottom of the support platform (2). The square movable groove is located at the bottom of the circular movable groove. A guide groove is provided between the square movable groove and the circular movable groove. The bottom of the arc-shaped extrusion plate (23) is fixedly connected with a connecting plate (24). The connecting plate (24) passes through the guide groove and extends to the inner side of the square movable groove. The connecting plate (24) and the guide groove are arranged in a clearance fit. The bottom of the connecting plate (24) located at the inner side of the square movable groove is fixedly connected with an extrusion matching plate (25), and the bottom of the extrusion matching plate (25) is arranged in an arc shape.

6. A construction steel bar bending device according to claim 5, characterized in that: The extrusion assembly (4) further comprises a fourth threaded rod (26), a fourth motor (27) and a movable extrusion plate (28); the fourth threaded rod (26) is rotatably connected to the inner side of the square movable groove; one end of the support platform (2) is fixedly connected to the fourth motor (27); the output end of the fourth motor (27) extends to the inner side of the square movable groove and is fixedly connected to the fourth threaded rod (26); the outer sides of both ends of the fourth threaded rod (26) are threadedly connected to the movable extrusion plates (28); the movable extrusion plates (28) correspond to the positions of the connecting plates (24); the tops of the movable extrusion plates (28) are arc-shaped and are extrusion-matched with the bottom of the connecting plate (24).

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